diff --git a/final/src/bin/main.rs b/final/src/bin/main.rs
index 8be0879..7e4b2df 100644
--- a/final/src/bin/main.rs
+++ b/final/src/bin/main.rs
@@ -104,7 +104,6 @@ async fn main(spawner: Spawner) -> ! {
     mqtt_publish("esp32/topic", b"hello from ESP32 (init)", QualityOfService::QoS1, false).await;
     info!("Sent initial MQTT message");
 
-    // Subscribe to your topics (can be done anytime; command is queued)
     mqtt_subscribe("esp32/topic").await;
 
     // Get a receiver for incoming MQTT messages
diff --git a/final/src/mqtt/client.rs b/final/src/mqtt/client.rs
index c1cf552..93940a5 100644
--- a/final/src/mqtt/client.rs
+++ b/final/src/mqtt/client.rs
@@ -35,7 +35,7 @@ static TCP_TX_BUFFER: ConstStaticCell<[u8; 2048]> = ConstStaticCell::new([0; 204
 static MQTT_TX_BUF: ConstStaticCell<[u8; 1024]> = ConstStaticCell::new([0; 1024]);
 static MQTT_RX_BUF: ConstStaticCell<[u8; 1024]> = ConstStaticCell::new([0; 1024]);
 
-// Tie TcpSocket lifetime to session, MQTT buffers to 'a (fixes E0521).
+// Tie TcpSocket lifetime to session
 type Client<'a, 'net> = MqttClient<'a, TcpSocket<'net>, 8, CountingRng>;
 
 #[derive(Clone)]
diff --git a/test_LED/src/bin/main.rs b/test_LED/src/bin/main.rs
index 166d33e..49df249 100644
--- a/test_LED/src/bin/main.rs
+++ b/test_LED/src/bin/main.rs
@@ -37,8 +37,49 @@ async fn main(spawner: Spawner) {
     
     info!("Embassy initialized!");
     
+
+    // LEDC initialization
+    let mut ledc = Ledc::new(peripherals.LEDC);
+    ledc.set_global_slow_clock(LSGlobalClkSource::APBClk);
+
+    let mut pwm_timer = ledc.timer::<LowSpeed>(timer::Number::Timer0);
+    pwm_timer
+        .configure(timer::config::Config {
+            duty: timer::config::Duty::Duty14Bit,
+            frequency: Rate::from_hz(1000),
+            clock_source: timer::LSClockSource::APBClk,
+        })
+        .unwrap();
+
+    let mut pwm_channel =
+        ledc.channel::<LowSpeed>(channel::Number::Channel0, peripherals.GPIO1);
+
+    pwm_channel
+        .configure(channel::config::Config {
+            timer: &pwm_timer,
+            duty_pct: 0,
+            pin_config: channel::config::PinConfig::PushPull,
+        })
+        .unwrap();
+
+    info!("LEDC configured successfully");
+    let mut brightness: i32 = 0;
+    let mut direction: i32 = 5;
+
     loop {
-        Timer::after(Duration::from_millis(50)).await;
+        // Set current brightness level (0–100 %)
+        pwm_channel.set_duty(brightness as u8).ok();
+
+        brightness += direction;
+        if brightness >= 100 {
+            brightness = 100;
+            direction = -5;
+        } else if brightness <= 0 {
+            brightness = 0;
+            direction = 5;
+        }
+
+        Timer::after(Duration::from_millis(30)).await;
     }
     
     // for inspiration have a look at the examples at https://github.com/esp-rs/esp-hal/tree/esp-hal-v1.0.0-rc.0/examples/src/bin